Clapboard-machine



(No Model.)

2 Sheets-Sheet 1. J. MoINTYRE.

GLAPBOARD MACHINE.

Patented Jan. 3, 1888.

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N. PETERS. HlMmLi'hOgnpller, Wnhmglan. D. c.

2 Sheetsl-Sheet' 2.

- (No Model.) 1

MoINTYRE. GLAPBOARD MACHINE.

Patented Jan. 3

II I l i I W u w w. EH W 8 8, n!

UNITED STATES.

PATENT O FICE.

JAMES MOINTYRE, OF BOSTON, MASSACHUSETTS.

CLAPBOARD-MACHINE.

SPECIFICATION forming part of Letters Patent-No. 375,887, dated January3, 1888.

Application filed Ftbruary 16, 1887. Serial No. 229,028. (No model.)

or more separate vertical rotating circular saws V placed in advance ofeach other and relatively arrangedto saw the log along its length and inseparate lines more or less radial with the center of the log or with agiven point eccentric thereto; second, in a machine for sawingclapboards from a log or other suitable blank, and which machineotherwise is of suitable construction and has means for suspending andcentering said log or other blank end to end, the combination of ananger or other suitable tool for boring it in and along the direction ofits length and on a line eccentric to said means of suspension andcentering of the log; third, in a machine for sawing clapboards fromalog or other suitable blank and which machine otherwise is of suitableconstruction, the combination of a rotating circular saw arranged to sawthe log along its length and in a line more or less radial with thecenter'ofthe log or with a given point eccentric thereto and an anger orother suitable tool for boring said log or blank in the direction ofitslength, all substantially as hereinafter described.

In the drawings 'of the present improved machine, and which drawingsform part of this specification, Figure l is a front elevation. Fig. 2is an end elevation with parts removed. Figs. 3, 4, 5, and 6 are viewsin detail, hereinafter explained.

I11 the drawings, A A A represent three similar circular-saw bladeshaving separate arbors A, each supported and turning in separatestationary bearing-blocks and severally located in the same horizontalplane, and each arranged to be driven by separate pulleywheels A andbelts A from two driving pulleys, A, suitably located therefor. Thesesaw-blades A A A are vertical and they are placed in advance of eachother and each in a different vertical plane, which is more or lessradial with a given center above them and within the compass of thelog Ahorizontally supported lengthwise above them, and from which clapboardsare to be sawed by the operation of said saws, as will hereinafterappear. The said saw-blades in operation cut the log A in separate linesrunning along the length of the log, the lines are at such distancesapart and have such radial arrangement that the saws secure the desiredthickness and bevel of the portion of the log remaining between the saidsaw-cuts and which makesthe clapboards.

The log A is centered or supported end to end on a carriage arranged tobe moved lengtlr wise of the bed ofthe machine, and thereby to presentthe log to the said saw-blades to be sawed by them and returned to itsnormal position'to be again similarly moved, and, furthermore, the socentered and supported log is capable of being turned over or rotated tosuitably present and hold it after each of its runs for again beingsawed, as before, and all otherwise as well known in similar machines,excepting, however, that in all previous machines a single saw-blade wasused, while in the present invention a series of saw-blades areemployed.

The several saw-bladcs operate simultaneously, and, as is plain, on allthe runs of a log centered and supported as stated, three sawcuts aremade in the first run, producing two clapboards,and in all succeedingruns producing three clapboards.

The centering and supporting of the log,tl1e means for moving the log toand back from the saw-blades, and the means for turning the log over orrotating it, all generally referred to in this description and more orless shown in the drawings, ofthemselves form no part of this invention,and, as they are well known in clapboardsawing machines, they need noparticular description herein.

The severahsaw-blades saw the log practically to the same depth, and, asusual, the thinner edge of the clapboards produced by them is the nearerto the center of thelo D is the auger-bit, of the ordinary form,with acutting end and a spigalfi twisted shank. B is a sleeve surrounding arldincasing and supporting the auger from end to end. This sleeve and theauger are both horizontal, and

the sleeve is supported and is free'to turn in stationary standards 0 ofthe bed of the machine, and it is at the end of the machine toward whichthe log travels in its run to be cut by the saw-blades, as stated, andin the horizontal plane of the inner edges of the saw-cuts or the edgestoward the center of the log.

The cutting end of the auger D projects slightly beyond the end of thesleeve B which is toward the log, and the anger, at its opposite end,has a pulley-wheel, E, by which,with a suitable beltconnection, torotate it, and its said surrounding sleeve is also provided with apulley-wheel, F, and a suitable belt-connection to rotate it andpreferably in a direction opposite to the direction of rotation of theau ger. The end of the sleeve toward the log is sharpened, Fig. 4, or,as well known, it may have cuttingteeth, and in the run of the log forbeing operated upon by the circular-saw blades A the log at the sametime is bored by the auger along the inner edge of the several saw-cutsmade by them, and at the same time the bore so made reamed out by thecutting end of the sleeve surrounding and supporting said anger, the two(auger and sleeve) entering the log and passing through it from end toend, and so entering separating therefrom the clapboards produced by thesaws.

The sleeve B may be stationary instead of rotating, and in the boringoperation of the auger it serves as a way to conduct the cuttings orchips made by the auger to the outside of the log.

By the machine described, plainly, clapboards can be most rapidly made,and as made separated from the log-out of which they are cut. The augerworks in a line eccentric to the centers of support to the log, andwhile it is preferable to employ an incasing and supporting sleeve, ashas been described for the anger, the sleeve may be dispensed with, Theauger for separating the clapboards from the log as they are sawed maybe employed with a single saw-blade in lieu of a series, as de scribed,and, in lieu of three, two or more saws may be used. The advantage of aseries is increased production of clapboards in a given number of runsof the log and a reduction of the number of runs of the log necessary tocomplete its sawing into clapboards.

I am aware that a vertical rotating circularsaw blade for sawing a loginto elapboards and means for a run of the log lengthwise for beingsawed and for holding of the log therefor, and for turning it over forsuccessive runs are not new. I am further aware that an auger and anincasing-sleeve therefor have been heretofore employed for boring a loglengthwise; but I am not aware that either or both have been combinedwith a saw-blade to bore the log as the blade is sawing it, bothoperations being in lines lengthwise of the log; and, also, I am notaware that means, substantially as described, to bore the log lengthwisehave been combined to operate on the log on a line eccentric to thecentering of the log in its sup ports.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s

1. In machines for sawing clapboards in whichthe log to be sawed iscarried by a support constructed and arranged for the log to be turnedthereon and provided with means for feeding lengthwise the log beingsawed, the combination of a circular saw to operate on the log, arrangedin a plane more or less radial therewith, means to rotate said saw, ananger to bore said log lengthwise along a line at the inner edge of theout made by said saw in the log, and means to rotate said augersimultaneouslywith the rotation of said saw, substantially as described.

2. In machines for sawing elapboards in which the log to be sawed iscarried by a support constructed and arranged for the log to be turnedthereon and provided with means for feeding lengthwise the log beingsawed, the combination of a circular saw to operate on the log, arrangedin a plane more or less radial therewith, means to rotate said saw, ananger to bore said log lengthwise and along a line at one side of thecentral line of the log and at the inner edge of the cut made by the sawin the log, and means to rotate said auger simultaneously with therotation of said saw, substantially as described.

JAMES MOINTYRE.

\Vitnesses:

CHAS. SPAULDING, W. O. SPAULDING.

